@byungi/p-retry NPM

@byungi/p-retry

Retry when promise fails.

Example

const runner = async () => {
    await asyncJobOrFail()
}

try{
    await pRetry(runner, {retries: 3})
}catch(err){
    console.log('3 retries, but all failed.')
}

API

pRetry(runner, options)

Retry when promise fails.

runner

A function that retries when a promise is rejected. This function should return promise.

options

retries - Number of retries. Default is 1.
interval - Delay before retry. Default is 0.

promise.cancel(reason)

Do not retry anymore and throw a CancelError.

import pRetry, {CancelError} from '@byungi/p-retry'

const retryPromise = pRetry(asyncAlwaysFailRequest, {retries: 1000})

setTimeout(()=> retryPromise.cancel(), 100) // After 100ms, retry is aborted.

retryPromise.catch(err => {
    console.log(err.isCanceled) // => true
    console.log(err instanceof CancelError) // => true
    console.log(retryPromise.isCanceled) // => true
})

promise.isCanceled

Returns whether the promise is canceled.

promise.pipe(onFulfilled, onRejected)

Similar to then but can propagate cancel to the upper promise.

const handleWithRequestPromise = retryPromise.pipe(response => {
    handleResponse(response)
})

handleWithRequestPromise.cancel() // => retry is aborted.